A pneumatic globe valve is a specific type of control valve that employs compressed air or gas to regulate the flow of fluids within a system. This type of valve combines the features of a globe valve, known for its precise control capabilities, with pneumatic actuation for automated and responsive operation.
The primary purpose of a pneumatic globe valve is to manage and adjust the flow rate, pressure, or level of fluids in a controlled manner. By utilizing pneumatic pressure, these valves can be controlled remotely and integrated into automated systems, allowing for accurate and dynamic adjustments based on input signals.
Throttling globe valves use linear motion to move the closing member in and out of the seat surface. Their bodies feature a spherical cavity around the port area and are designed to regulate the process flow when used in conjunction with an actuator assembly. Many single-seat valve bodies use a cage or cage-type construction to hold the seat ring in place, provide plug guidance, and provide a means of establishing specific valve flow characteristics. Cage or cage type single seat valve bodies can also be easily modified by replacing the valve internals to change the flow characteristics or provide reduced capacity flow, noise attenuation, or to reduce or eliminate cavitation.
Remote Control: Pneumatic actuation allows for remote control of the valve's position, enabling precise adjustments without the need for direct human intervention.
Automation: These valves are commonly used in industrial processes where automation is essential, such as in chemical plants, refineries, and power generation facilities.
Process Stability: Pneumatic globe valves contribute to process stability by responding swiftly to changes in control signals and maintaining desired process variables.
PID Control Loops: They are often integrated into proportional-integral-derivative (PID) control loops to regulate complex processes accurately.
Safety: Pneumatic globe valves can be set up to respond to safety shutdown signals, helping to prevent hazardous conditions.
Process Optimization: Industries that require precise control over flow rates, pressures, or temperatures benefit from these valves in optimizing their processes for efficiency and reliability.
Pneumatic globe valves consist of a valve body, a movable plug or disc, and an actuator that uses compressed air or gas to position the plug and control the flow. The degree of valve opening is determined by the air pressure supplied to the actuator, which is regulated by a pneumatic controller based on the desired process conditions.
Industrial Process Piping Systems
Double containment systems
Acid waste systems and wastewater
High purity systems
Municipal pressure and gravity piping systems
Plumbing and Mechanical Piping Systems
Electrical systems
Irrigation systems
Radiant heating systems
Pinch valves use a flexible rubber or plastic tube that is pinched closed to regulate fluid flow.
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